Illustration · 120 half-cut cells

Solar panelREC Group

REC Group REC360AA Black

Name: REC Group REC360AA Black
Brand: REC Group

120 half-cut cells, HJT. Power classes 340–380 W in the CEC list.

CEC listed · Aug 15, 2019UL 61730Installed in 8 SoCal permits

Power class

Power (STC)360 WCEC nameplate
Efficiency≈21.3%calculated from area
%/°C Pmax−0.266CEC listing test
PTC / STC94.7%PTC 341 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 9 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
REC340AA Black	340 W	43.10	10.09	36.40	9.34	≈20.1%	321 W	Aug 15, 2019
REC345AA Black	345 W	43.40	10.12	36.70	9.39	≈20.4%	326 W	Aug 15, 2019
REC350AA Black	350 W	43.20	10.44	36.00	9.73	≈20.7%	331 W	Aug 15, 2019
REC355AA Black	355 W	43.60	10.47	36.40	9.77	≈21.0%	336 W	Aug 15, 2019
REC360AA Black	360 W	43.90	10.49	36.70	9.82	≈21.3%	341 W	Aug 15, 2019
REC365AA Black	365 W	44.00	10.52	37.10	9.85	≈21.6%	346 W	Aug 15, 2019
REC370AA Black	370 W	44.10	10.55	37.40	9.90	≈21.9%	351 W	Dec 11, 2020
REC375AA Black	375 W	44.20	10.58	37.80	9.94	≈22.2%	356 W	Dec 11, 2020
REC380AA Black	380 W	44.30	10.61	38.10	9.98	≈22.5%	360 W	Dec 11, 2020

≈ efficiency = Pmax ÷ CEC-listed area 1.69 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.69 m² (18.2 ft²)CEC-listed area
Cells120 half-cut cellsHJT
Back coverBlack backsheet

Heat & cold behaviour

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	CEC listing test
Pmax coefficient γ	−0.266 %/°C
Voc coefficient β	−0.235 %/°C
Isc coefficient α	+0.037 %/°C
Operating cell temperature	NOCT 46 °C

Vmp coefficient ≈ γ − α (CEC); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
340 W	252.4 W	34.19 V × 7.38 A	63.5 W	93%
345 W	255.8 W	34.47 V × 7.42 A	64.4 W	93%
350 W	251.7 W	34.24 V × 7.35 A	62.6 W	89%
355 W	255.6 W	34.62 V × 7.38 A	63.5 W	89%
360 W	259 W	34.9 V × 7.42 A	64.4 W	89%
365 W	262.6 W	35.28 V × 7.44 A	65.3 W	89%
370 W	266.1 W	35.57 V × 7.48 A	66.1 W	89%
375 W	270 W	35.95 V × 7.51 A	67.1 W	89%
380 W	273.2 W	36.23 V × 7.54 A	67.9 W	89%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

PVEL Scorecards

REC Group named Top Performer, 2016–2025

RETC PV Module Index

REC Group recognized 2023–2025

This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

RETC PV Module Index — REC Group

Year	Recognition
2023	High Achievement in Performance (Ptc-to-stc ratio, Module efficiency)
2024	High Achievement in Performance
2025	Test Category High Achiever

Inverter compatibility & string sizing

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · NLR PVWatts v8 · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

46.3 V

Voc when cold

per panel

31.3 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

Min panels / string

MPPT from 60 V

Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above. β is the CEC-measured coefficient; NEC 690.7 calculations use the datasheet value.

String inverters most named in SoCal permits

Inverter	Max DC input	MPPT	Window source	Panels per string
Tesla 1538000-xx-y	600 V	60–480 V	datasheet	2–12
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–12
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–12
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	8–10

Microinverters (one per panel)

Microinverter	Recommended module power	Max DC input	MPPT	Voc cold / Vmp hot	Check	DC/AC
Enphase IQ8PLUS-72-2-US	235–440 W	60 V	29–45 V	46.3 / 31.3 V	✓ Within range	1.24
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	46.3 / 31.3 V	✗ Not a match: module voltage below MPPT range	0.95
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	46.3 / 31.3 V	✓ Within range	0.46
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	46.3 / 31.3 V	✓ Within range	1.11
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	46.3 / 31.3 V	⚠ Works; below MPPT at peak heat	1.03

Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.

SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	603	11,464	6.08
Palmdale	1,835	661	12,551	6.69
Chula Vista	1,696	611	11,601	6.11
Huntington Beach	1,643	591	11,238	5.89
Riverside	1,696	611	11,601	6.21
Santa Clarita	1,724	621	11,792	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Who installs RECxxxAA Black panels in SoCal

building permits · CSLB License Master

Permits naming this series

Jul 2020 – Mar 2023

Licensed installers

CSLB license on the permit

Jurisdictions so far

LA County (unincorp.) (7), Los Angeles (1)

Treepublic Solar

Hawthorne · CSLB #996593

1 installJul 2021Los Angeles

Permits over time

Power class named in permit

360 W

365 W

370 W

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Installed together with

building permits

Inverters

SolarEdge SE…H (HD-Wave)

Batteries

Tesla Powerwall 2

Number of permits naming both this panel series and the product; 7 of 8 permits list other equipment.

Compare with similar 360 W panels

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · Qcells datasheet · building permits

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
REC Group REC360AA Black	360 W	≈21.3%	−0.266	43.9	10.49	brand 9×	8
LONGi LR4-60HPB-360M	360 W	≈20.3%	−0.339	40.8	11.33	product 2021, 2022	193
Trina Solar TSM-360DE06X.05(II)	360 W	≈19.8%	−0.339	44.8	10.3	product 2022	23
Qcells Q.PEAK DUO-G8+ 360	360 W	≥20.1%	−0.343	41.19	10.84	product 2022	20

Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

About REC Group

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · RETC PV Module Index · building permits

ManufacturerREC Group
Listed in CEC asREC Group
PVEL Top Performer (manufacturer)9 Scorecards (2016–2025)
RETC PV Module Index2023, 2024, 2025
Current panel series in CEC list26

Other series by SoCal permits

RECxxxAA Pure · 66RECxxxAA Pure-RX · 33RECxxxAA · 30RECxxxNP3 Black · 7RECxxxAA Pure 2 · 6RECxxxNP · 4

Questions & answers

How efficient is the REC Group REC360AA Black?

Calculated from the panel area (1.69 m²): about 21.3% for the 360 W class. 360 W over 1.69 m² equals about 213 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 603 kWh per year per 360 W panel in Los Angeles and about 661 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.266 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 13.8% below the STC rating.

How many panels fit on one string?

With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 2–12 panels per string (Voc at 2 °C = 46.3 V, Vmp at 74 °C cell = 31.3 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with Enphase IQ8PLUS-72-2-US microinverters?

Voltage check against the Enphase datasheet: Voc when cold 46.3 V vs max input 60 V; Vmp when hot 31.3 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; REC Group was named a Top Performer in 9 Scorecards (2016–2025).

Who installs it in Southern California?

Building permits name this series 8 times (Jul 2020 – Mar 2023). The most active licensed installers are Treepublic Solar.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Qcells — manufacturer datasheet “Q.PEAK DUO-G8+ 345-360 EN ENDURING HIGH”.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2016–2025.
RETC — PV Module Index reports 2023–2025.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Jul 2020 – Mar 2023); LADBS, City of Los Angeles (Jul 2021). Equipment matched from permit descriptions by model number.
Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).